Peguins are black and white.Some old TV shows are black and white.What can you properly infer?
MayaKhannaJanuary 10, 2023
Why is "some are not" incorrect?
Hi! I read Skylar’s explanation about why “some are not” is not the correct answer, but I am still a little confused. It makes sense to me that we can transpose Penguins are black and white to
P —> BW
(Not BW) —> (Not P)
And then using the N —> S is equivalent to (N - some - S), we know:
(BW - some - P) or “Some black and white (things) are penguins”
By my understanding, we can also transpose “some old TV shows are black and white” as follows: BW — some — OTV
By that logic, don’t we have:
BW — some — OTV
BW —some — Penguins
This is where I get lost because intuitively, ALL penguins being black and white and only SOME old TV shows being black and white seems to imply that the “some” of the old TV shows not being black and white means they are not penguins. But they have the same sufficient term. . . does it not work because “some old TV shows are black and white” is not an if —> then sentence?
Sorry for the confusion, but would love some help!
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Hi, I think this one is much easier to think about intuitively. What we have been told is that we have two categories, and that they both share one quality. If two different things have one thing in common, this does not mean that they are the same thing.
For example,
Cannoli are made of protons, electrons, and neutrons Some supernovas are also made of protons, electrons, and neutrons.
Does this mean that some cannoli are supernovae? Of course not. Having one quality in common does not make one thing into another that shares that quality.
I think you're getting tripped up on the some are not, but I would say that we do not know for sure that there must be some old to shows that are not black and white.
